本文選題：超大型　切入點：履帶起重機　出處：《浙江大學》2014年碩士論文　論文類型：學位論文

【摘要】：隨著社會和科技的發(fā)展與進步,整體吊裝已經(jīng)成為工程建設中不可或缺的重要角色。由于超大型履帶起重機具備其他起重機械所不具備的諸多優(yōu)點,凸顯其重要性和必要性,決定了必然越來越受到各行各業(yè)的重視和青睞。作為起重機械,起升系統(tǒng)穩(wěn)定性和安全性尤為重要。在起升系統(tǒng)中,對安全性影響較大的問題之一是二次起升的防下滑問題,二次起升過程性能直接影響著整機的工作性能和壽命。由于本文研究的超大型履帶起重機采用閉式系統(tǒng),使得該問題比其他中小型或者采用開式系統(tǒng)的起重機更為明顯。目前,超大型履帶起重機該問題的研究,國內(nèi)要落后于國外,相應文獻和資料也較少。本文就該問題提出一種對于二次起升防下滑的解決方案,并通過理論和仿真分析進行起升系統(tǒng)的研究和優(yōu)化,為實際開發(fā)中提高起升系統(tǒng)動態(tài)特性性能提供理論指導和參考。 第一章,在查閱大量國內(nèi)外有關起重機起升系統(tǒng)二次起升問題的研究文獻的基礎上,介紹國內(nèi)外履帶起重機生產(chǎn)以及應用的概況,二次起升問題的普遍性,以及國內(nèi)外對于二次起升問題的研究現(xiàn)狀和解決方案。并進一步對比分析超大型履帶起重機二次起升問題與文獻資料中問題的相通之處和獨特之處,從而提出了本課題的研究內(nèi)容和意義。 第二章,設計超大型履帶起重機起升系統(tǒng)的電液控制系統(tǒng),并介紹起升系統(tǒng)各部分工作原理和控制方案。根據(jù)實際工況,確定起升系統(tǒng)關鍵參數(shù),并選取關鍵元件。 第三章,通過數(shù)學建模和理論分析的方法,研究電液控制系統(tǒng)中,元件以及參數(shù)設置對于起升系統(tǒng)綜合性能的影響,并進行理論計算和優(yōu)化。 第四章,基于仿真軟件AMESim,建立起升系統(tǒng)的液壓模型,對前一章理論分析結果進行仿真分析和結果優(yōu)化。 第五章,總結本課題完成工作以及不足之處,并對以后超大型履帶起重機的起升系統(tǒng)研究以及優(yōu)化工作提出展望。
[Abstract]:With the development and progress of society and science and technology, integral hoisting has become an indispensable and important role in engineering construction. As a lifting appliance, the stability and safety of hoisting system are very important. One of the problems that have a great influence on safety in hoisting system is the anti-slide problem of secondary hoisting. The performance of secondary hoisting process directly affects the working performance and life of the whole machine. Because the super large crawler crane studied in this paper uses closed system, the problem is more obvious than that of other cranes with medium or small size or open system. The research on this problem of super-large crawler crane is lagging behind that of foreign countries, and the corresponding literature and data are also relatively few. This paper puts forward a solution to this problem, which is to prevent the secondary hoisting from sliding. Through theoretical and simulation analysis, the research and optimization of hoisting system are carried out, which provides theoretical guidance and reference for improving the dynamic characteristics of hoisting system in practical development. In the first chapter, on the basis of consulting a large number of domestic and foreign literatures on the secondary hoisting problem of crane hoisting system, the general situation of production and application of crawler crane at home and abroad, the universality of secondary hoisting problem are introduced. As well as the domestic and foreign research status and solutions for the secondary hoisting problem. Furthermore, the similarities and uniqueness between the secondary hoisting problem of super-large crawler crane and the problems in the literature are compared and analyzed. Thus, the research content and significance of this subject are put forward. In the second chapter, the electro-hydraulic control system of the lifting system of super-large crawler crane is designed, and the working principle and control scheme of each part of the lifting system are introduced. According to the actual working conditions, the key parameters of the lifting system are determined, and the key components are selected. In the third chapter, through mathematical modeling and theoretical analysis, the effects of components and parameters on the overall performance of the hoisting system are studied, and the theoretical calculation and optimization are carried out. In chapter 4th, the hydraulic model of the lifting system is established based on the simulation software AMESim. the theoretical analysis results of the previous chapter are simulated and optimized. In chapter 5th, the paper summarizes the work and shortcomings of this subject, and puts forward the prospect of the research and optimization of the lifting system of super large crawler crane in the future.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TH213.7

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